<template>
  <div>
    <el-container>
      <!-- 头部 -->
      <el-header>
        <div>
          <img src="../assets/logo.png" alt="" />
          <span>电商后台</span>
        </div>
        <el-button type="info" @click="logout">退出</el-button></el-header
      >
      <!-- 主体 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse?'64px':'200px'">
            <div class="toggle-botton" @click="toggleCollapse">|||</div>
          <!-- 侧边栏菜单 -->
          <el-menu
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409fff"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            router
            :default-active="activePath"
          >
            <!-- 一级菜单 -->
            <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
              <!-- 一级菜单模板 -->
              <template slot="title">
                <!-- 一级菜单图标 -->
                <i :class="iconsObj[item.id]"></i>
                <!-- 一级菜单文本 -->
                <span>{{item.authName}}</span>
              </template>
              <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)"
                ><template slot="title">
                  <!-- 一级菜单图标 -->
                  <i class="el-icon-menu"></i>
                  <!-- 一级菜单文本 -->
                  <span>{{subItem.authName}}</span>
                </template></el-menu-item
              >
            </el-submenu>
          </el-menu>
        </el-aside>
        <!-- 右侧主题 -->
        <el-main>
            <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 左侧菜单数据
      menuList: [],
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.el-container {
  height: 100vh;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
    img {
      width: 40px;
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu{
      border-right:none;
  }
}
.el-main {
  background-color: #f1f1f1;
}
.iconfont{
    margin-right: 10px;
}

.toggle-botton{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>
